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Social Studies, 18.11.2019 20:31 khamani623
Emma is planning an experiment to examine whether reading to children increases their vocabulary size. she plans to measure the vocabulary size of a group of 18-month-olds, read to them three times a week for three months, then measure their vocabulary size again. how could emma change the design of the study to remove a major threat to internal validity?
a) she could add a comparison group.
b) she could make it a double-blind placebo control study.
c) she could counterbalance her conditions.
d) she could add a manipulation check.
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Social Studies, 22.06.2019 10:20, jay3676
The belmont principle of beneficence requires that: a. subjects derive individual benefit from study participation. b. potential benefits justify the risks of harm. c. the study makes a significant contribution to generalizable knowledge. d. risks are managed so that they are no > minimal.
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